:root {
  color-scheme: light;
  --ink: #132021;
  --ink-strong: #071112;
  --muted: #5d6a6c;
  --muted-2: #798689;
  --line: rgba(35, 53, 55, 0.14);
  --line-strong: rgba(35, 53, 55, 0.24);
  --paper: #fbfcfa;
  --paper-warm: #f5f2ef;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --charcoal: #0b1517;
  --slate: #17282b;
  --brand: #c86455;
  --brand-dark: #8d4350;
  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --radius-sm: 4px;
  --radius-md: 7px;
  --radius-lg: 10px;
  --shadow-sm: 0 8px 22px rgba(9, 22, 24, 0.06);
  --shadow-md: 0 16px 36px rgba(9, 22, 24, 0.09);
  --transition: 180ms ease;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, rgba(141, 67, 80, 0.08), transparent 30rem),
    radial-gradient(circle at 82% 78%, rgba(23, 40, 43, 0.06), transparent 32rem),
    linear-gradient(180deg, #fbfcfa 0%, #f4f5f3 50%, #fbfcfa 100%);
  font-family: Inter, Manrope, Satoshi, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.62;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(19, 32, 33, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19, 32, 33, 0.018) 1px, transparent 1px);
  background-size: 56px 56px, 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.45), rgba(0,0,0,0.08));
}

a {
  color: var(--brand-dark);
  text-underline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  background:
    linear-gradient(180deg, rgba(11, 21, 23, 0.97), rgba(18, 31, 34, 0.96)),
    var(--charcoal);
  box-shadow: 0 12px 26px rgba(7, 17, 18, 0.16);
  backdrop-filter: blur(18px);
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  max-width: var(--max);
  margin: 0 auto;
  padding: 8px 24px 6px;
}

.brand-logo {
  width: clamp(60px, 5.5vw, 78px);
  max-height: 86px;
  object-fit: contain;
  height: auto;
  display: block;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.22));
}

.header-copy {
  min-width: 220px;
}

.site-header .eyebrow {
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 2px;
}

.eyebrow {
  margin: 0 0 var(--space-1);
  color: var(--brand-dark);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink-strong);
  letter-spacing: 0;
  line-height: 1.06;
}

.site-header h1 {
  color: #fff;
  text-shadow: 0 10px 26px rgba(0, 0, 0, 0.22);
  font-size: clamp(2.15rem, 4vw, 4.35rem);
  line-height: 0.98;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 5.6rem);
}

h2 {
  font-size: clamp(2rem, 3.4vw, 3.65rem);
}

h3 {
  font-size: 1.12rem;
}

.tabs {
  display: flex;
  gap: 8px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.tab {
  position: relative;
  flex: 0 0 auto;
  min-height: 36px;
  padding: 8px 13px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.06);
  transition: transform var(--transition), background var(--transition), color var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.tab.is-active,
.tab:hover {
  color: #fff;
  border-color: rgba(200, 100, 85, 0.44);
  background: rgba(141, 67, 80, 0.72);
  box-shadow: none;
  transform: none;
}

.section {
  scroll-margin-top: 118px;
  padding: 74px 24px;
}

.section > * {
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
}

.hero-band {
  position: relative;
  overflow: hidden;
}


.muted {
  background: rgba(246, 247, 245, 0.72);
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.lede {
  max-width: 800px;
  margin: var(--space-3) 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.evidence-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: var(--space-3);
  width: min(590px, 100%);
}

.evidence-strip div,
.panel,
.guide-card,
.citation-list p,
.example-callout,
.artifact-table,
.artifact-intro,
.machine-note,
.disclosure {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(4px);
}

.evidence-strip div {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.evidence-strip div::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--brand-dark);
}

.evidence-strip div::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, rgba(141, 67, 80, 0.38), transparent);
}

.evidence-strip strong {
  display: block;
  color: var(--brand-dark);
  font-size: clamp(2rem, 4vw, 3.35rem);
  font-weight: 900;
  line-height: 0.95;
}

.evidence-strip span {
  display: block;
  margin-top: var(--space-2);
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.evidence-link {
  display: inline-block;
  margin-top: var(--space-2);
  color: var(--brand-dark);
  font-size: 0.78rem;
  font-weight: 900;
  text-decoration: none;
}

.evidence-link:hover {
  text-decoration: underline;
}

.example-callout,
.disclosure,
.artifact-intro,
.machine-note {
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.example-callout {
  margin-bottom: var(--space-4);
  border-left: 5px solid var(--brand-dark);
}

.disclosure {
  margin-bottom: var(--space-5);
  color: var(--muted);
}

.disclosure summary {
  color: var(--ink-strong);
  cursor: pointer;
  font-weight: 900;
}

.disclosure p {
  margin: var(--space-3) 0 0;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.75fr);
  gap: var(--space-5);
}

.panel {
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.panel h3 + .presentation-list,
.panel h3 + .toggle-grid {
  margin-top: var(--space-3);
}

.presentation-list {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.presentation-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(190px, 0.58fr);
  gap: var(--space-3);
  align-items: end;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--transition), transform var(--transition);
}

.presentation-row:hover {
  background: rgba(141, 67, 80, 0.035);
}

.evidence-box {
  min-height: 78px;
  border: 1px solid rgba(141, 67, 80, 0.20);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  background: rgba(141, 67, 80, 0.055);
}

.evidence-box strong {
  display: block;
  color: var(--brand-dark);
  font-size: 1.14rem;
  font-weight: 900;
}

.evidence-box span,
.evidence-box small {
  display: block;
}

.evidence-box span {
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 900;
  line-height: 1.25;
}

.evidence-box small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.34;
}

.evidence-box .evidence-link {
  margin-top: 5px;
  font-size: 0.73rem;
}

label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-weight: 850;
  font-size: 0.94rem;
}

.form-helper {
  margin: 8px 0 var(--space-3);
  color: var(--muted);
  font-size: 0.94rem;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(19, 32, 33, 0.16);
  border-radius: var(--radius-md);
  padding: 12px 13px;
  color: var(--ink);
  font: inherit;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
button:focus-visible,
.tab:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(141, 67, 80, 0.20);
  outline-offset: 3px;
}

input:focus,
textarea:focus {
  border-color: rgba(141, 67, 80, 0.62);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(141, 67, 80, 0.08);
}

.toggle-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.switch {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.72);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.switch:hover {
  border-color: rgba(141, 67, 80, 0.28);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.switch input {
  width: 18px;
  height: 18px;
  accent-color: var(--brand-dark);
}

.procedure-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin: var(--space-3) 0 var(--space-6);
}

.result-panel {
  position: sticky;
  top: 126px;
  align-self: start;
  background:
    linear-gradient(180deg, rgba(11, 21, 23, 0.97), rgba(23, 40, 43, 0.96));
  color: rgba(255, 255, 255, 0.82);
  border-color: rgba(255, 255, 255, 0.10);
  box-shadow: 0 16px 42px rgba(7, 17, 18, 0.16);
}

.result-panel h3,
.result-panel .note,
.result-panel .metric-list span,
.result-panel .revenue-box span {
  color: rgba(255, 255, 255, 0.72);
}

.big-number {
  display: flex;
  align-items: end;
  gap: var(--space-2);
  margin: var(--space-5) 0 var(--space-1);
}

.big-number span {
  color: #fff;
  font-size: clamp(4.2rem, 8vw, 6.4rem);
  font-weight: 950;
  line-height: 0.86;
  text-shadow: none;
}

.big-number small {
  color: rgba(255, 255, 255, 0.68);
  font-weight: 850;
  padding-bottom: 10px;
}

.quarter-number {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.2rem;
  font-weight: 900;
}

.metric-list {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-5) 0;
}

.metric-list div {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.045);
}

.metric-list strong {
  color: #fff;
  text-align: right;
}

.revenue-box {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  background: rgba(255, 255, 255, 0.055);
}

.revenue-box div {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
}

.revenue-box strong {
  color: #fff;
  text-align: right;
}

.revenue-box .total {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-2);
  font-weight: 900;
}

.revenue-box .total span {
  color: #fff;
}

.note {
  color: var(--muted);
  font-size: 0.92rem;
}

.scenario-label {
  margin-bottom: var(--space-2);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

button {
  min-height: 44px;
  border: 0;
  border-radius: var(--radius-sm);
  padding: 10px 17px;
  color: #fff;
  background: var(--brand-dark);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(141, 67, 80, 0.16);
}

button.secondary {
  color: var(--ink);
  background: #e3e7e6;
}

.alignment-panel {
  border-top: 4px solid var(--brand-dark);
}

.alignment-panel h3 {
  margin-bottom: var(--space-3);
  font-size: 1.6rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-4) 0;
}

.chips span {
  border: 1px solid rgba(141, 67, 80, 0.22);
  border-radius: var(--radius-sm);
  padding: 7px 11px;
  color: var(--brand-dark);
  background: rgba(141, 67, 80, 0.08);
  font-size: 0.86rem;
  font-weight: 850;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}

.guide-card {
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.guide-card:hover {
  transform: translateY(-3px);
  border-color: rgba(141, 67, 80, 0.18);
  box-shadow: var(--shadow-md);
}

.guide-card h3 {
  color: var(--brand-dark);
}

.guide-card ol {
  padding-left: 20px;
  margin: var(--space-3) 0 0;
}

.guide-card li + li {
  margin-top: 8px;
}

.artifact-table {
  display: grid;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.artifact-intro {
  margin-bottom: var(--space-4);
  border-left: 5px solid var(--brand-dark);
}

.machine-note {
  max-width: var(--max);
  margin: -4px auto var(--space-4);
  color: var(--brand-dark);
  font-weight: 850;
}

.artifact-row {
  display: grid;
  grid-template-columns: minmax(150px, 0.8fr) minmax(130px, 0.62fr) minmax(0, 1.25fr) minmax(0, 1.25fr);
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--line);
  align-items: center;
}

.artifact-row:first-child {
  border-top: 0;
}

.artifact-head {
  color: #fff;
  background: var(--slate);
  font-weight: 900;
}

.artifact-row span:first-child {
  font-weight: 850;
}

.pattern-name {
  display: block;
  color: var(--ink-strong);
  font-weight: 900;
}

.frequency-label {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.artifact-thumb {
  display: block;
  width: 100%;
  border: 0;
  border-radius: var(--radius-md);
  padding: 0;
  background: #111;
  cursor: zoom-in;
  overflow: hidden;
}

.artifact-thumb:hover {
  box-shadow: 0 0 0 3px rgba(141, 67, 80, 0.20);
}

.artifact-row img {
  display: block;
  width: 100%;
  max-height: 160px;
  border-radius: var(--radius-md);
  object-fit: cover;
  background: #111;
}

.artifact-image-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.artifact-expanded {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(260px, 0.95fr) minmax(0, 1fr);
  gap: var(--space-5);
  border-top: 1px solid var(--line);
  padding-top: var(--space-4);
}

.artifact-expanded[hidden] {
  display: none;
}

.artifact-expanded-images {
  display: grid;
  gap: var(--space-2);
}

.artifact-expanded-images img {
  max-height: 460px;
  object-fit: contain;
}

.artifact-expanded-copy {
  display: grid;
  align-content: start;
  gap: var(--space-3);
  border-left: 4px solid var(--brand-dark);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.055);
}

.artifact-expanded-copy h3 {
  color: var(--brand-dark);
}

.artifact-expanded-copy p {
  margin: 0;
  color: var(--muted);
}

.artifact-expanded-copy strong {
  color: var(--ink);
}

.citation-list {
  display: grid;
  gap: var(--space-3);
}

.citation-list p {
  margin: 0;
  border-left: 5px solid var(--brand-dark);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  scroll-margin-top: 128px;
}

.citation-list p:target {
  border-color: var(--brand);
  background: rgba(141, 67, 80, 0.08);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-5);
  padding: var(--space-5) 24px;
  color: rgba(255, 255, 255, 0.80);
  background: var(--charcoal);
  font-size: 0.92rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}

@media (max-width: 1100px) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .section-head,
  .tool-grid {
    display: grid;
  }

  .brand-wrap {
    gap: var(--space-3);
    padding: 8px 20px 6px;
  }

  .brand-logo {
    width: 66px;
  }

  .site-header h1,
  h1 {
    font-size: clamp(2.1rem, 9vw, 4.1rem);
  }

  .evidence-strip,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .tool-grid {
    grid-template-columns: 1fr;
  }

  .result-panel {
    position: static;
  }

  .toggle-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .site-header {
    position: sticky;
  }

  .brand-wrap {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: var(--space-3);
    padding: 8px 16px 6px;
  }

  .brand-logo {
    width: 56px;
  }

  .site-header .eyebrow {
    font-size: 0.63rem;
  }

  .site-header h1,
  h1 {
    font-size: clamp(1.55rem, 8vw, 2.5rem);
  }

  .tabs {
    padding-left: 16px;
    padding-right: 16px;
  }

  .section {
    scroll-margin-top: 126px;
    padding: 48px 16px;
  }

  .presentation-row,
  .toggle-grid,
  .procedure-grid {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: var(--space-4);
  }

  .artifact-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    padding: var(--space-4);
  }

  .artifact-expanded {
    grid-template-columns: 1fr;
  }

  .big-number span {
    font-size: 4rem;
  }

  .footer {
    display: grid;
  }
}